As my colleague Benjamin Ensor wrote some time ago, innovation often happens in clusters.This means that innovation by one company causes its competitors to not only match it but also to try to leapfrog it — resulting in rapid cycles of innovation. This is what is happening in Poland right now. During my trip there last week, a few bank executives told me of the increasing internal and external pressure not to fall behind digital innovation. There a couple of other reasons why Poland is a great testing ground for new financial services ideas; it has: